US11121458B2ActiveUtilityA1

Antenna structure

42
Assignee: WISTRON NEWEB CORPPriority: Sep 19, 2018Filed: Sep 6, 2019Granted: Sep 14, 2021
Est. expirySep 19, 2038(~12.2 yrs left)· nominal 20-yr term from priority
Inventors:Yun-Tsan Lee
H01Q 1/22H01Q 1/48H01Q 5/321H01Q 1/52H01Q 1/36H01Q 7/005H01Q 1/243
42
PatentIndex Score
0
Cited by
6
References
19
Claims

Abstract

An antenna structure includes a ground element, a feeding radiation element, a first radiation element, and a second radiation element. The feeding radiation element is coupled to a signal source. The first radiation element is coupled to the ground element. The first radiation element is adjacent to the feeding radiation element. The feeding radiation element is coupled through the second radiation element to the ground element. A first loop structure is formed by the feeding radiation element, the first radiation element, and the ground element. A second loop structure is formed by the feeding radiation element, the second radiation element, and the ground element. The second loop structure includes neither any branching portion nor any protruding portion.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
       1. An antenna structure, comprising:
 a ground element; 
 a feeding radiation element, coupled to a signal source; 
 a first radiation element, coupled to the ground element, wherein the first radiation element is adjacent to the feeding radiation element; 
 a second radiation element, wherein the feeding radiation element is coupled through the second radiation element to the ground element; and 
 a first reactance element, coupled between the feeding radiation element and one end of the first radiation element; 
 wherein a first loop structure is formed by the feeding radiation element, the first radiation element, and the ground element; 
 wherein a second loop structure is formed by the feeding radiation element, the second radiation element, and the ground element, and wherein the first loop structure and the second loop structure do not overlap each other. 
 
     
     
       2. The antenna structure as claimed in  claim 1 , wherein the feeding radiation element is positioned between the first radiation element and the second radiation element. 
     
     
       3. The antenna structure as claimed in  claim 1 , wherein the feeding radiation element substantially has a straight-line shape. 
     
     
       4. The antenna structure as claimed in  claim 1 , wherein the first radiation element substantially has an L-shape. 
     
     
       5. The antenna structure as claimed in  claim 1 , wherein the second radiation element substantially has an L-shape. 
     
     
       6. The antenna structure as claimed in  claim 1 , wherein the second loop structure includes neither any branching portion nor any protruding portion. 
     
     
       7. The antenna structure as claimed in  claim 1 , wherein the first reactance element is a capacitor. 
     
     
       8. The antenna structure as claimed in  claim 7 , wherein a capacitance of the capacitor is from 0 pF to 5 pF. 
     
     
       9. The antenna structure as claimed in  claim 1 , further comprising:
 a second reactance element, embedded in the first radiation element. 
 
     
     
       10. The antenna structure as claimed in  claim 9 , wherein the second reactance element is an inductor. 
     
     
       11. The antenna structure as claimed in  claim 10 , wherein an inductance of the inductor is from 0 nH to 5 nH. 
     
     
       12. The antenna structure as claimed in  claim 1 , wherein the first loop structure is excited to generate a first frequency band, and the second loop structure is excited to generate a second frequency band which is higher than the first frequency band. 
     
     
       13. The antenna structure as claimed in  claim 12 , wherein the first frequency band is from 2400 MHz to 2500 MHz, and the second frequency band is from 5150 MHz to 5850 MHz. 
     
     
       14. The antenna structure as claimed in  claim 12 , wherein a length of the first loop structure is equal to 0.5 wavelength of the first frequency band, and a length of the second loop structure is equal to 0.5 wavelength of the second frequency band. 
     
     
       15. The antenna structure as claimed in  claim 1 , wherein the first radiation element has a first height on the ground element, the second radiation element has a second height on the ground element, and the first height is greater than the second height. 
     
     
       16. The antenna structure as claimed in  claim 1 , wherein the first radiation element has a first height on the ground element, the second radiation element has a second height on the ground element, and the first height is equal to the second height. 
     
     
       17. The antenna structure as claimed in  claim 1 , wherein a first hollow region is inside the first loop structure, a second hollow region is inside the second loop structure, and a width of the first hollow region is greater than a width of the second hollow region. 
     
     
       18. The antenna structure as claimed in  claim 1 , wherein a first hollow region is inside the first loop structure, a second hollow region is inside the second loop structure, and a width of the first hollow region is smaller than a width of the second hollow region. 
     
     
       19. An antenna structure, comprising:
 a ground element; 
 a feeding radiation element, coupled to a signal source; 
 a first radiation element, coupled to the ground element, wherein the first radiation element is adjacent to the feeding radiation element; and 
 a second radiation element, wherein the feeding radiation element is coupled through the second radiation element to the ground element; 
 wherein a first loop structure is formed by the feeding radiation element, the first radiation element, and the ground element; 
 wherein a second loop structure is formed by the feeding radiation element, the second radiation element, and the ground element, wherein the first loop structure and the second loop structure do not overlap each other, and wherein the second loop structure includes neither any branching portion nor any protruding portion; 
 wherein the feeding radiation element is positioned between the first radiation element and the second radiation element; 
 wherein a coupling gap is formed between one end of the first radiation element and the feeding radiation element; 
 wherein each of the first radiation element and the second radiation element substantially has an L-shape.

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